The bearings of a vibration sieve require regular lubrication with oil, whereas a vibration dewatering sieve generally does not need lubrication. However, for safety's sake and to prevent accidents, it's important to maintain the dewatering sieve properly. The lubrication methods for the bearings and the dewatering sieve are different. Below, we will discuss the lubrication methods for the dewatering sieve equipment.
The dewatering screen operates through the use of a reciprocating vibration generated by an oscillator. The upper rotating weight of the oscillator creates a planar circular vibration on the screen surface, while the lower rotating weight induces a conical rotational vibration. The combined effect results in a complex composite rotational vibration on the screen surface. Its vibration path is a complex spatial line, which projects as a circle on the horizontal plane and as an ellipse on the vertical plane. By adjusting the excitation force of the upper and lower rotating weights, the amplitude can be changed. By adjusting the spatial phase angle between the upper and lower weights, the shape of the screen surface's motion trajectory can be altered, thus changing the material's trajectory on the screen surface. Therefore, to ensure the normal operation of the dewatering screen, it is necessary to lubricate the dewatering screen equipment to prevent damage or operational failures.
The pre-assembled oil tube is焊接 onto the sealed plate oil cup position, with the top higher than the balance level, and secured to the screen box with tube clips. A screw-type grease applicator is used for a thicker molybdenum disulfide lubricant, which directly enters the bearings through the oil tube and the oil paths on the sealed plate; a splash guard is added at the shoulder of the eccentric shaft, with an inner diameter larger than the bearing inner diameter and an outer diameter smaller than the bearing outer diameter, preventing friction between the splash guard and the bearing outer ring. The splash guard is positioned by the inner ring of the bearing and the shoulder of the eccentric shaft, providing effective oil containment; the bolts securing the sealing plate are moderately tightened, and the nuts and bolts are焊接 firmly to prevent loosening.
Therefore, lubrication is not solely for bearings; it also benefits the dewatering screen. However, most people's understanding is limited to lubricating bearings, without knowing that dewatering screens can also be lubricated. This is because, in most cases, as long as the bearings are well-lubricated, there aren't many issues. But if you want to extend the life of the dewatering screen, lubrication is also necessary. After all, machinery and equipment tend to operate less smoothly over time.
1. If the vibration dewatering screen fails to start or the amplitude is too small, check for any damage to the motor, or if there are any faulty components in the circuit, or if the voltage is insufficient. If there are no issues with these three aspects, then investigate the mechanical aspects.
2. Confirm if there is excessive material accumulation on the vibrating dehydration screen's surface; if so, clear it immediately.
3. Fault Analysis and Inspection Methods: Check for loose bolts on the coupling of the exciter and whether the lubricating grease has thickened and formed lumps. At this point, clean and inspect the exciter, and then adjust the position of the eccentric shaft weight or the secondary eccentric weight as needed.
4. If there is an abnormal material flow on the screening surface of the dewatering screen equipment, check and analyze from the following two aspects:
(1) The screening box lacks rigidity, presenting a critical frequency; the connecting bolts have become loose, even to the extent of loosening, i.e., they are not securely fastened.
(2) The horizontal level of the screening box was not properly aligned. Issues could be with the support foot spring's mount or the spring itself. Replace the spring or adjust the mount size. Additionally, it may be caused by a damaged sieve mesh, which can be resolved by replacing the sieve mesh.
